Grade 9 Science Worksheets

Learning Objectives

• Interpret microscopy images using scale bars and understand how resolution limits affect what can be seen
• Use staining and contrast patterns to infer the likely location of cellular structures
• Distinguish biological signals from artifacts when comparing images across time or treatments+ Show more

Learning Objectives

• Explain how net force (vector sum of forces) relates to acceleration and changes in motion
• Determine whether motion stays constant or speeds up/slows down based on balanced vs. unbalanced forces
• Use force directions and vector ideas to predict the direction of acceleration+ Show more

Learning Objectives

• Explain how gravity provides the inward (centripetal) force that keeps planets and moons in curved orbits
• Describe how orbital paths are repeatable and how orbital period relates to time-based patterns in the sky
• Use qualitative reasoning to connect an object’s distance from a massive body to its orbital motion

Learning Objectives

• Understand the process of DNA replication and its semi-conservative nature.
• Identify key enzymes involved in DNA replication such as helicase, primase, and DNA polymerase.
• Explain the roles of leading and lagging strand synthesis and the significance of Okazaki fragments.+ Show more

Learning Objectives

• Understand the different types of motion graphs: position–time and velocity–time graphs
• Interpret the slope of position–time graphs as velocity
• Interpret the slope of velocity–time graphs as acceleration+ Show more

Learning Objectives

• Understand how different organ systems communicate through feedback mechanisms
• Identify examples of feedback loops in physiological processes
• Explain the role of redundancy and cross-regulation among body systems+ Show more

Learning Objectives

• Explain how major organelles in eukaryotic cells are structured for specific functions.
• Connect membrane folding and compartmentalization to rates of metabolism and efficient exchange.
• Describe how the nucleus, endoplasmic reticulum, Golgi apparatus, mitochondria, ribosomes, and cytoskeleton work together.

Learning Objectives

• Explain how epithelial tissue structure supports protection and selective exchange
• Describe how connective tissue extracellular matrix and blood support transport and strength
• Connect muscle and nervous tissue microscopic organization to their physiological roles

Learning Objectives

• Understand how iteration uses test evidence to refine solutions.
• Explain the connection between the design cycle and iterative improvements.
• Identify examples of modifications made during iterative testing to improve performance.+ Show more

Learning Objectives

• Explain how environmental chemical changes can be interpreted using observable evidence and particle/atomic ideas.
• Apply the idea of mass conservation and clear system boundaries to environmental chemical problems.
• Relate chemistry concepts to Alberta-relevant contexts such as acid deposition, tailings chemistry, and nutrient cycling.

Learning Objectives

• Explain how the Moon and Sun create tidal forces on Earth’s oceans.
• Describe the difference between spring tides and neap tides.
• Predict how local geography and ocean basin features can change tidal range and currents.

Learning Objectives

• Explain how insulin and glucagon respond to changes in blood glucose using negative feedback
• Identify the roles of beta cells, alpha cells, target tissues, set points, and effectors in glucose regulation
• Describe how glycogenolysis and gluconeogenesis help restore blood glucose when it drops

Learning Objectives

• Explain how forces combine to produce a net force and how net force relates to acceleration.
• Determine the direction of acceleration when forces oppose each other.
• Use the idea of net force being nonzero to predict changes in motion.

Learning Objectives

• Explain particle conservation using a particulate model of matter.
• Use atom counts to check whether proposed chemical equations balance.
• Identify the relationship between reactants, products, and rearranged atoms.

Learning Objectives

• Define mechanical advantage and explain its significance in machinery.
• Identify different types of simple machines that provide mechanical advantage.
• Describe how mechanical advantage affects force and distance in machines.+ Show more

Learning Objectives

• Identify key components of ecosystems including organisms and environmental factors.
• Understand how predation, competition, and mutualism influence species populations.
• Explain the impact of environmental variables like water, temperature, and nutrients on ecosystems.+ Show more

Learning Objectives

• Understand the key nutrients involved in biological processes
• Describe how nutrients move through ecosystems
• Recognize human impacts on nutrient cycling+ Show more

Learning Objectives

• Describe how to report quantitative uncertainty using confidence/interval language in scientific claims.
• Use and interpret effect sizes, likelihood statements, and variability visualizations to avoid misleading conclusions.
• Identify assumptions, limits of extrapolation, and alternative explanations when interpreting data and models.

Learning Objectives

• Use balanced chemical equations to determine mole ratios between reactants and products.
• Convert between mass, moles, and molar mass using stoichiometry relationships.
• Apply mole ratios to calculate unknown masses of reactants or products.+ Show more

Learning Objectives

• Understand the importance of balancing chemical equations to reflect atomic conservation.
• Learn how to identify and apply coefficients to balance chemical equations correctly.
• Recognize the role of state indicators and stoichiometric coefficients in symbolic chemical equations.+ Show more

Learning Objectives

• Explain how adaptive radiation leads to multiple species from a single ancestral lineage
• Describe how ecological niches, key innovations, and selection pressures influence divergence
• Use concepts like niche partitioning and varying selective pressures to predict patterns of biodiversity

Learning Objectives

• Describe the biological hierarchy from molecules to organisms
• Explain how emergent properties arise at higher levels of organization
• Connect structure at each level to function at the next level up

Learning Objectives

• Compare physical, cellular, and biochemical immune barriers with adaptive immune responses.
• Explain how antigen recognition leads to inflammation, antibody production, and immune memory.
• Describe how stress, nutrition, and environmental exposures can alter immune competence and increase disease risk.

Learning Objectives

• Explain how uncertainty comes from limitations in data collection and from conditions that differ from an intended model.
• Identify common error sources such as instrument limits, human judgment, environmental variation, and oversimplified assumptions.
• Use uncertainty to judge whether results meaningfully differ from each other or could be due to chance and error.

Learning Objectives

• Understand the components and processes involved in biogeochemical cycles.
• Identify how elements like carbon, nitrogen, and phosphorus move through Earth's spheres.
• Explain the role of biological processes such as photosynthesis, decomposition, and nitrogen fixation.+ Show more

Learning Objectives

• Describe how the Earth’s magnetic field is related to navigation tools like compasses and to dip and declination angles.
• Explain how regional magnetic variation affects map-and-compass use and surveying in Alberta.
• Connect auroral displays to magnetism and charged particles in Earth’s upper atmosphere.

Learning Objectives

• Explain how chemical reactions involve changes in potential and kinetic energy.
• Differentiate endothermic and exothermic reactions using energy and bond ideas.
• Interpret simple energy diagrams and relate them to observable temperature changes.+ Show more

Learning Objectives

• Use balanced chemical equations and conservation of mass to relate reactants and products quantitatively.
• Convert between moles, mass, and particle counts using molar masses and Avogadro’s number.
• Determine the limiting reagent and predict theoretical yield from stoichiometric ratios.

Learning Objectives

• Understand the concept of water reservoirs in the water cycle
• Identify the main reservoirs for carbon and water
• Explain how reservoirs interact and affect climate and environmental processes+ Show more

Learning Objectives

• Identify kinetic and potential energy in mechanical systems
• Understand how work, collisions, and friction transfer energy
• Explain how energy converts between forms during mechanical processes+ Show more

Learning Objectives

• Explain how cellular organelles' structures support their specific functions.
• Describe how organism structures reflect their functional needs.
• Use models to connect physical features to biological roles.+ Show more

Learning Objectives

• Explain how mechanical digestion and chemical hydrolysis break food into molecules that can be absorbed.
• Describe how intestinal villi and microvilli increase surface area and improve nutrient transport.
• Compare facilitated diffusion, active transport, and transport via micelles for different nutrient types.+ Show more

Learning Objectives

• Understand the concept of uncertainty in scientific measurements.
• Identify common sources of measurement errors such as instrument limitations, human judgment, and environmental factors.
• Evaluate how measurement uncertainties can impact scientific conclusions.

Learning Objectives

• Explain how genes and alleles determine genotypes and lead to observable phenotypes
• Use dominant and recessive inheritance relationships to predict trait outcomes across generations
• Interpret heredity evidence using genotype-to-phenotype reasoning

Learning Objectives

• Understand the structure of electron shells and energy levels
• Identify how electrons are distributed in atoms based on their electron configuration
• Recognize the importance of valence electrons in chemical reactivity and bonding+ Show more

Learning Objectives

• Describe how forces act as push or pull interactions and identify examples of contact and non-contact forces in everyday Alberta contexts.
• Use magnitude and direction to reason about forces as vectors, including how opposing forces affect motion.
• Explain, qualitatively, how net force expectations relate to whether an object speeds up, slows down, or changes direction.

Learning Objectives

• Identify different parts of mechanical devices
• Understand how parts interact within a system
• Explain the roles of inputs, outputs, and energy transfers+ Show more

Learning Objectives

• Use dimensional analysis to check that equations for physical and biological quantities have consistent units.
• Derive relationships between quantities by tracking units and identifying plausible proportionality and rate forms.
• Use unit-checking to find and correct algebraic or modeling errors, and to constrain scaling and density/flux/rate computations.

Learning Objectives

• Explain how protons, neutrons, and electrons determine atomic structure and ion formation
• Describe how electron configurations and valence electrons relate to chemical properties and periodic trends
• Use quantized energy levels to connect atomic structure models to spectral behavior and reactivity

Learning Objectives

• Explain conservation of energy in isolated systems and distinguish energy transfer between forms.
• Use kinetic and potential energy ideas to predict motion outcomes in mechanical situations.
• Describe how nonconservative forces (like friction) convert mechanical energy into thermal energy.+ Show more

Learning Objectives

• Compare physical and chemical changes using the ideas of energy transfer between a system and its surroundings
• Determine whether a change is endothermic or exothermic based on temperature behavior and direction of energy flow
• Explain how microscopic particle motion/arrangement and bond rearrangement relate to observable temperature changes

Learning Objectives

• Understand key concepts related to Science
• Apply knowledge through practice questions
• Demonstrate comprehension of the material

Learning Objectives

• Understand the main functions of the immune system
• Differentiate between innate and adaptive immune responses
• Recognize how immune communication integrates with other body systems+ Show more

Learning Objectives

• Understand the different types of species interactions that shape community structure.
• Identify examples of ecosystem engineers and keystone species.
• Explain how indirect effects influence ecosystem stability.+ Show more

Learning Objectives

• Explain why circular motion requires a centripetal net force directed toward the center.
• Use the relationship between centripetal acceleration, speed, and radius to predict how motion changes.
• Identify and analyze the forces (tension, friction, normal force) that provide the inward centripetal force.

Learning Objectives

• Identify how uncertainty (error bars and uncertainty bands) is used to show limits in measurements.
• Interpret whether differences or trends are meaningful by comparing overlap or separation of uncertainties.
• Explain why measurement noise can change the strength of conclusions drawn from graphs.

Learning Objectives

• Interpret weather data patterns using variables such as temperature, humidity (dew point), wind, and pressure
• Explain how short-term weather variability differs from longer-term climate averages
• Use evidence from data trends to describe likely precipitation timing, cloud development, and storm intensity

Learning Objectives

• Explain how compound machines combine simple machines to produce mechanical advantage
• Calculate ideal mechanical advantage using force and displacement relationships
• Compare ideal mechanical advantage with actual performance after accounting for friction and deformation+ Show more